package com.cm.study.other.classstudy;

import java.util.Enumeration;
import java.util.Properties;

public class StudySystem1 {
    public static void main(String[] args) {
        Properties properties = System.getProperties();
        Enumeration<Object> keys = properties.keys();
        while(keys.hasMoreElements()){
            Object o = keys.nextElement();
            System.out.println(o+"-->"+properties.getProperty(o.toString()));
        }
    }
}
